/Engine/Source/Runtime/AssetRegistry/Public/AssetRegistry/IAssetRegistry.h
Gets the LongPackageName for all packages with the given PackageName. Call to check existence of a LongPackageName or find all packages with a ShortPackageName.
void GetPackagesByName ( FStringView PackageName, [TArray](API\Runtime\Core\Containers\TArray)< [FName](API\Runtime\Core\UObject\FName) > & OutPackageNames ) const